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Federal filingsHome›Trouble codes› B395A
Diagnostic trouble code

B395A

1 owner report and 142 manufacturer filings across 71 model years from Buick, Cadillac, Chevrolet, GMC.

Body Manufacturer-specific 142 manufacturer filings 1 owner report

Where B395A shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reportsParts
2022 GMC TerrainElectrical System4—Battery →
2021 Cadillac XT4Electrical System3—Battery →
2020 Cadillac XT4Electrical System3—Battery →
2021 GMC AcadiaBack Over Prevention21
2023 Buick EnclaveBack Over Prevention2—
2022 Buick EnclaveEquipment2—
2021 Buick EnclaveElectrical System2—Battery →
2020 Buick EnclaveEquipment2—
2023 Buick EncoreEquipment2—
2022 Buick EncoreBack Over Prevention2—
2021 Buick EncoreElectrical System2—Battery →
2020 Buick EncoreElectrical System2—Battery →
2019 Buick LaCrosseElectrical System2—Battery →
2020 Cadillac CT6Electrical System2—Battery →
2019 Cadillac CT6Back Over Prevention2—
2023 Cadillac XT4Electrical System2—Battery →
2022 Cadillac XT4Back Over Prevention2—
2019 Cadillac XT4Back Over Prevention2—
2023 Cadillac XT5Electrical System2—Battery →
2022 Cadillac XT5Electrical System2—Battery →
2021 Cadillac XT5Electrical System2—Battery →
2020 Cadillac XT5Electrical System2—Battery →
2023 Cadillac XT6Equipment2—
2022 Cadillac XT6Back Over Prevention2—
2021 Cadillac XT6Equipment2—

Showing the 25 model years where B395A appears most; it is on file for 71 in total.

A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.

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B395A by make

The same record, one make at a time: the model years, bulletins and owner reports that name B395A on that maker’s vehicles.

Chevrolet 29GMC 18Cadillac 15Buick 9

What it gets filed under

Electrical System 62 Equipment 45 Back Over Prevention 35 Forward Collision Avoidance 1

142 manufacturer filings name B395A. Start with what the maker wrote down.

A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.

Photo: Compagnons / Unsplash

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names B395A.

What B395A means

Source: SAE J2012 / OBD-II

B395A is a manufacturer-specific code: the second character is a 3, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.

A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.

From here

Common questions about B395A

Source: NHTSA files and the OBD-II standard

Why does this page not define B395A?

Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.

Can I keep driving with B395A stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.

Does a code mean the car is recalled?

No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.

Why do the counts here differ from other sites?

Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.

Will clearing the code fix it?

Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.